• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Begonia 'Lucerna' (C)

begonia 'Lucerna'

  • Other common names begonia 'Lucerna'

  • Synonyms Begonia × corallina 'Lucerna'
    Begonia 'Corallina de Lucerna'

    Begonia 'Carolina de Lucerna'
    Begonia corallina 'Lucerna'
    Begonia 'Lucerne'

    see more
  • Family Begoniaceae

  • Genus Begonia can be annuals, evergreen or deciduous perennials or shrubs, with fibrous, tuberous or rhizomatous roots and usually asymmetrical leaves, often strikingly patterned, and small or large flowers, both male and female in the same cluster

  • Horticultural Group Cane-stem begonias are erect, evergreen perennials with fibrous roots and cane-like stems with asymmetrical, strongly toothed leaves, often strikingly marked, and showy flower clusters in spring or summer

  • Details 'Lucerna' is a strong-growing, erect cane-stem begonia with obliquely ovate, olive green leaves heavily spotted with silver, and large panicles of pink flowers 3-4cm across in summer

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)

    H1B

Colour

Sunlight

  • Partial Shade

  • Aspect South-facing or West-facing or East-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Sand

    Sand

  • MoistureWell-drained

  • SoilLoam, Sand

  • pHAcid, Neutral

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow outdoors in well-drained humus-rich, neutral to acidic soil. Grow in good but not direct light in a frost-free area. Under glass grow in well drained loam-less or loam-based compost. Will not tolerate water logging. See Begonias: outdoors for further advice.

Propagation Propagate by seed, stem tip or leaf cuttings

Suggested planting locations and garden types Low Maintenance Cottage & Informal Garden Patio & Container Plants Mediterranean Climate Plants

How to care

Pruning No pruning required

Pests Can get caterpillars, mealybugs, tarsonemid mite, thrips, vine weevil and aphids

Diseases May be infected by powdery mildews, stem rot and rhizome rot

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.